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 The present invention is related to a device for detecting the signal in a wireless LAN(Local Area Network), and more particularly to a portable device which is convenient to detect the signal strength of each point in the wireless LAN. The device is used to detect the signal of wireless LAN on each frequency channel, such as home RF, blue tooth and frequency hopping, etc.
 The LAN have developed to wireless LAN. Comparing to the traditional LAN, the wireless LAN have some advantages. For example, the wire allocation will be reduced, and a terminal equipment can be put into anywhere the wireless signal is reachable. In a wireless LAN, a portable computer (for example a notebook) at each corner can easily connect to a host. This is convenient to the portable computer. The portable computer will not be required a network line for the connection with the host. Therefore, the potential in future of wireless LAN will be better than the traditional LAN.
 The allocation of each AP
 The skill in prior art about the allocation of APs always depend on experience, and additionally, a frequency spectrum analyzer is employed to obtained the signal strength. The size and weight of a frequency spectrum analyzer is always large, so it is not convenient to be taken around a room or office for detecting the signal strength.
 An object of the present invention is to provide a palm type device for the wireless signal detection in a wireless LAN.
 Another object of the present invention is to provide a palm type device for allocating a AP to the best position.
 Another object of the present invention is to provide a useful message on the LCD panel for the construction of a wireless LAN.
 According to the present invention, a device for detecting a signal in a wireless local area network comprising : a portable entity for being taken by a user to find a strength of the signal at a point in the wireless local area network; a wireless transceiver located in the portable entity for receiving the signal; a controller located in the portable entity and electrically connected to the wireless transceiver for processing the signal and producing a result; and a controllable panel located on the portable entity and electrically connected to the controller for displaying a message about a distribution status of the signal to the user according the result.
 In accordance with one aspect of the present invention, the wireless local area network having several hosts.
 In accordance with one aspect of the present invention, a host is an access point.
 In accordance with one aspect of the present invention, the portable entity is a palm type portable entity.
 In accordance with one aspect of the present invention, the point is in a room.
 In accordance with one aspect of the present invention, the point is in an office.
 In accordance with one aspect of the present invention, the wireless transceiver is a wireless radio frequency transceiver.
 In accordance with one aspect of the present invention, the controller is a microprocessor.
 In accordance with one aspect of the present invention, the controllable panel is a touch-controllable panel.
 In accordance with one aspect of the present invention, the message including a sound, a light, and a vibration.
 The present invention may best be understood through the following description with reference to the accompanying drawings, in which:
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 A wireless LAN may include several hosts. A host may be as a AP so each host can also communicate each other by the wireless method. In the present invention, the portable entity is of palm type. The use can put on the palm to look or detect the wireless signal strength everywhere.
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 While the invention has been described in terms of what are presently considered to be the most practical and preferred embodiments, it is to be understood that the invention need not be limited to the disclosed embodiment. On the contrary, it is intended to cover various modifications and similar arrangements included within the spirit and scope of the appended claims which are to be accorded with the broadest interpretation so as to encompass all such modifications and similar structures.